MLchartDataset catalogue

Leonardite

Term · Oil and gas · MLC-T-OAG-002150

A naturally oxidized lignite coal, used as a drilling fluid additive to control rheology and fluid loss. It acts as a deflocculant and a thinner, especially in water-based muds. This material is rich in humic acids, which contribute to its effectiveness in stabilizing shales and reducing filtration rates at elevated temperatures.

Table 1. Record
IdentifierMLC-T-OAG-002150
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-002150",
  "term": "Leonardite",
  "field": "Oil and gas",
  "definition": "A naturally oxidized lignite coal, used as a drilling fluid additive to control rheology and fluid loss. It acts as a deflocculant and a thinner, especially in water-based muds. This material is rich in humic acids, which contribute to its effectiveness in stabilizing shales and reducing filtration rates at elevated temperatures.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/leonardite/"
}

Record 2,298 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.